Cita APA (7th ed.)

Verderber, R. F. (2000). The challenge of effective speaking (Annotated instructor's ed.). Wadsworth/Thomson Learning.

Cita Chicago (17th ed.)

Verderber, Rudolph F. The Challenge of Effective Speaking. Annotated instructor's ed. Belmont, CA: Wadsworth/Thomson Learning, 2000.

Cita MLA (9th ed.)

Verderber, Rudolph F. The Challenge of Effective Speaking. Annotated instructor's ed. Wadsworth/Thomson Learning, 2000.